SOLUTION: My question is about adding factorials. This seems easy but not sure. Question is 9! + 4! I understand that the nine is 9 8 7 6 5 4 3 2 1 then the 4 is 4

Question 76400: My question is about adding factorials. This seems easy but not sure.
Question is 9! + 4!

I understand that the nine is 9 8 7 6 5 4 3 2 1 then the 4 is 4 3 2 1 do you just add the numbers?????? Or what?
Thanks,
Gary
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Since 9! is 9*8*7*6*5*4*3*2*1 and 4! is 4*3*2*1 we have a common factor of 4*3*2*1 . So we can factor this out

Compute the factorials
Add

This is just one way of doing it. You can just simply evaluate 9! and 4! and add the 2 large numbers together, but I thought I'd show you another way.
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